how to make folder php code example

Example 1: create folder php

// Create folder if not exist
		$folderName = 'images/gallery';
		$config['upload_path'] = $folderName;
		if(!is_dir($folderName))
		{
			mkdir($folderName, 0777);
		}

Example 2: using php, how to create a folder in another folder

mkdir('images/user/15', 0777, true);